Takamatsu
"Takamatsu, the first place I visited in Japan"
The first company that employed me when I was in Japan had its head office in Takamatsu, so I spent a week there in training, and frequently visited thereafter, both to catch up with friends, and for work.
It's a pleasant city, and as not far from the bigger cities in the Kansai region either. Three hours on a ferry, or a couple on a train and you can be in Osaka.

